xy.c revision 1.52
1 /* $NetBSD: xy.c,v 1.52 2003/08/27 15:41:04 mrg Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.52 2003/08/27 15:41:04 mrg Exp $"); 55 56 #undef XYC_DEBUG /* full debug */ 57 #undef XYC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 59 #define XYC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/dkbad.h> 77 #include <sys/conf.h> 78 79 #include <machine/bus.h> 80 #include <machine/intr.h> 81 82 #if defined(__sparc__) || defined(sun3) 83 #include <dev/sun/disklabel.h> 84 #endif 85 86 #include <dev/vme/vmereg.h> 87 #include <dev/vme/vmevar.h> 88 89 #include <dev/vme/xyreg.h> 90 #include <dev/vme/xyvar.h> 91 #include <dev/vme/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * macros 97 */ 98 99 /* 100 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 101 */ 102 #define XYC_GO(XYC, ADDR) { \ 103 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 104 (ADDR) = ((ADDR) >> 8); \ 105 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 106 (ADDR) = ((ADDR) >> 8); \ 107 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 108 (ADDR) = ((ADDR) >> 8); \ 109 (XYC)->xyc_reloc_hi = (ADDR); \ 110 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 111 } 112 113 /* 114 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 115 */ 116 117 #define XYC_DONE(SC,ER) { \ 118 if ((ER) == XY_ERR_AOK) { \ 119 (ER) = (SC)->ciorq->errno; \ 120 (SC)->ciorq->mode = XY_SUB_FREE; \ 121 wakeup((SC)->ciorq); \ 122 } \ 123 } 124 125 /* 126 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 127 */ 128 129 #define XYC_ADVANCE(IORQ, N) { \ 130 if (N) { \ 131 (IORQ)->sectcnt -= (N); \ 132 (IORQ)->blockno += (N); \ 133 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 134 } \ 135 } 136 137 /* 138 * note - addresses you can sleep on: 139 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 140 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 141 */ 142 143 144 /* 145 * function prototypes 146 * "xyc_*" functions are internal, all others are external interfaces 147 */ 148 149 extern int pil_to_vme[]; /* from obio.c */ 150 151 /* internals */ 152 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 153 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 154 char *xyc_e2str __P((int)); 155 int xyc_entoact __P((int)); 156 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 157 struct xy_iopb *, int)); 158 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 159 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 160 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 161 int xyc_remove_iorq __P((struct xyc_softc *)); 162 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 163 struct xy_softc *)); 164 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 165 struct xy_softc *, int, u_long, int, 166 caddr_t, struct buf *)); 167 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 168 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 169 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 170 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 171 void xyc_tick __P((void *)); 172 int xyc_unbusy __P((struct xyc *, int)); 173 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 174 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 175 int *, bus_size_t, caddr_t *, bus_addr_t *); 176 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 177 int, bus_size_t, caddr_t); 178 179 /* machine interrupt hook */ 180 int xycintr __P((void *)); 181 182 /* autoconf */ 183 int xycmatch __P((struct device *, struct cfdata *, void *)); 184 void xycattach __P((struct device *, struct device *, void *)); 185 int xymatch __P((struct device *, struct cfdata *, void *)); 186 void xyattach __P((struct device *, struct device *, void *)); 187 static int xyc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 188 189 static void xydummystrat __P((struct buf *)); 190 int xygetdisklabel __P((struct xy_softc *, void *)); 191 192 /* 193 * cfattach's: device driver interface to autoconfig 194 */ 195 196 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 197 xycmatch, xycattach, NULL, NULL); 198 199 CFATTACH_DECL(xy, sizeof(struct xy_softc), 200 xymatch, xyattach, NULL, NULL); 201 202 extern struct cfdriver xy_cd; 203 204 dev_type_open(xyopen); 205 dev_type_close(xyclose); 206 dev_type_read(xyread); 207 dev_type_write(xywrite); 208 dev_type_ioctl(xyioctl); 209 dev_type_strategy(xystrategy); 210 dev_type_dump(xydump); 211 dev_type_size(xysize); 212 213 const struct bdevsw xy_bdevsw = { 214 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 215 }; 216 217 const struct cdevsw xy_cdevsw = { 218 xyopen, xyclose, xyread, xywrite, xyioctl, 219 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 220 }; 221 222 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 223 int driveno; /* unit number */ 224 int fullmode; /* submit mode */ 225 int booting; /* are we booting or not? */ 226 }; 227 228 /* 229 * dkdriver 230 */ 231 232 struct dkdriver xydkdriver = { xystrategy }; 233 234 /* 235 * start: disk label fix code (XXX) 236 */ 237 238 static void *xy_labeldata; 239 240 static void 241 xydummystrat(bp) 242 struct buf *bp; 243 { 244 if (bp->b_bcount != XYFM_BPS) 245 panic("xydummystrat"); 246 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 247 bp->b_flags |= B_DONE; 248 bp->b_flags &= ~B_BUSY; 249 } 250 251 int 252 xygetdisklabel(xy, b) 253 struct xy_softc *xy; 254 void *b; 255 { 256 const char *err; 257 #if defined(__sparc__) || defined(sun3) 258 struct sun_disklabel *sdl; 259 #endif 260 261 /* We already have the label data in `b'; setup for dummy strategy */ 262 xy_labeldata = b; 263 264 /* Required parameter for readdisklabel() */ 265 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 266 267 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 268 xydummystrat, 269 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 270 if (err) { 271 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 272 return(XY_ERR_FAIL); 273 } 274 275 #if defined(__sparc__) || defined(sun3) 276 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 277 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 278 if (sdl->sl_magic == SUN_DKMAGIC) { 279 xy->pcyl = sdl->sl_pcylinders; 280 } else 281 #endif 282 { 283 printf("%s: WARNING: no `pcyl' in disk label.\n", 284 xy->sc_dev.dv_xname); 285 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 286 xy->sc_dk.dk_label->d_acylinders; 287 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 288 xy->sc_dev.dv_xname, xy->pcyl); 289 } 290 291 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 292 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 293 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 294 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 295 xy->sectpercyl = xy->nhead * xy->nsect; 296 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 297 * sun->bsd */ 298 return(XY_ERR_AOK); 299 } 300 301 /* 302 * end: disk label fix code (XXX) 303 */ 304 305 /* 306 * Shorthand for allocating, mapping and loading a DMA buffer 307 */ 308 int 309 xy_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 310 bus_dma_tag_t tag; 311 bus_dmamap_t map; 312 bus_dma_segment_t *seg; 313 int *nsegp; 314 bus_size_t len; 315 caddr_t *kvap; 316 bus_addr_t *dmap; 317 { 318 int nseg; 319 int error; 320 321 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 322 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 323 return (error); 324 } 325 326 if ((error = bus_dmamem_map(tag, seg, nseg, 327 len, kvap, 328 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 329 bus_dmamem_free(tag, seg, nseg); 330 return (error); 331 } 332 333 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 334 BUS_DMA_NOWAIT)) != 0) { 335 bus_dmamem_unmap(tag, *kvap, len); 336 bus_dmamem_free(tag, seg, nseg); 337 return (error); 338 } 339 340 *dmap = map->dm_segs[0].ds_addr; 341 *nsegp = nseg; 342 return (0); 343 } 344 345 void 346 xy_dmamem_free(tag, map, seg, nseg, len, kva) 347 bus_dma_tag_t tag; 348 bus_dmamap_t map; 349 bus_dma_segment_t *seg; 350 int nseg; 351 bus_size_t len; 352 caddr_t kva; 353 { 354 355 bus_dmamap_unload(tag, map); 356 bus_dmamem_unmap(tag, kva, len); 357 bus_dmamem_free(tag, seg, nseg); 358 } 359 360 361 /* 362 * a u t o c o n f i g f u n c t i o n s 363 */ 364 365 /* 366 * xycmatch: determine if xyc is present or not. we do a 367 * soft reset to detect the xyc. 368 */ 369 int 370 xyc_probe(arg, tag, handle) 371 void *arg; 372 bus_space_tag_t tag; 373 bus_space_handle_t handle; 374 { 375 struct xyc *xyc = (void *)handle; /* XXX */ 376 377 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 378 } 379 380 int xycmatch(parent, cf, aux) 381 struct device *parent; 382 struct cfdata *cf; 383 void *aux; 384 { 385 struct vme_attach_args *va = aux; 386 vme_chipset_tag_t ct = va->va_vct; 387 vme_am_t mod; 388 int error; 389 390 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 391 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 392 return (0); 393 394 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 395 mod, VME_D16, xyc_probe, 0); 396 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 397 398 return (error == 0); 399 } 400 401 /* 402 * xycattach: attach controller 403 */ 404 void 405 xycattach(parent, self, aux) 406 struct device *parent, *self; 407 void *aux; 408 409 { 410 struct xyc_softc *xyc = (void *) self; 411 struct vme_attach_args *va = aux; 412 vme_chipset_tag_t ct = va->va_vct; 413 bus_space_tag_t bt; 414 bus_space_handle_t bh; 415 vme_intr_handle_t ih; 416 vme_am_t mod; 417 struct xyc_attach_args xa; 418 int lcv, res, error; 419 bus_dma_segment_t seg; 420 int rseg; 421 vme_mapresc_t resc; 422 bus_addr_t busaddr; 423 424 /* get addressing and intr level stuff from autoconfig and load it 425 * into our xyc_softc. */ 426 427 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 428 429 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 430 panic("xyc: vme alloc"); 431 432 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 433 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 434 panic("xyc: vme_map"); 435 436 xyc->xyc = (struct xyc *) bh; /* XXX */ 437 xyc->ipl = va->ilevel; 438 xyc->vector = va->ivector; 439 xyc->no_ols = 0; /* XXX should be from config */ 440 441 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 442 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 443 444 /* 445 * allocate and zero buffers 446 * check boundaries of the KVA's ... all IOPBs must reside in 447 * the same 64K region. 448 */ 449 450 /* Get DMA handle for misc. transfers */ 451 if ((error = vme_dmamap_create( 452 ct, /* VME chip tag */ 453 MAXPHYS, /* size */ 454 VME_AM_A24, /* address modifier */ 455 VME_D16, /* data size */ 456 0, /* swap */ 457 1, /* nsegments */ 458 MAXPHYS, /* maxsegsz */ 459 0, /* boundary */ 460 BUS_DMA_NOWAIT, 461 &xyc->reqs[lcv].dmamap)) != 0) { 462 463 printf("%s: DMA buffer map create error %d\n", 464 xyc->sc_dev.dv_xname, error); 465 return; 466 } 467 468 /* Get DMA handle for mapping iorq descriptors */ 469 if ((error = vme_dmamap_create( 470 ct, /* VME chip tag */ 471 XYC_MAXIOPB * sizeof(struct xy_iopb), 472 VME_AM_A24, /* address modifier */ 473 VME_D16, /* data size */ 474 0, /* swap */ 475 1, /* nsegments */ 476 XYC_MAXIOPB * sizeof(struct xy_iopb), 477 64*1024, /* boundary */ 478 BUS_DMA_NOWAIT, 479 &xyc->iopmap)) != 0) { 480 481 printf("%s: DMA buffer map create error %d\n", 482 xyc->sc_dev.dv_xname, error); 483 return; 484 } 485 486 /* Get DMA buffer for iorq descriptors */ 487 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 488 XYC_MAXIOPB * sizeof(struct xy_iopb), 489 (caddr_t *)&xyc->iopbase, 490 &busaddr)) != 0) { 491 printf("%s: DMA buffer alloc error %d\n", 492 xyc->sc_dev.dv_xname, error); 493 return; 494 } 495 xyc->dvmaiopb = BUS_ADDR_PADDR(busaddr); 496 497 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 498 499 xyc->reqs = (struct xy_iorq *) 500 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 501 M_DEVBUF, M_NOWAIT|M_ZERO); 502 if (xyc->reqs == NULL) 503 panic("xyc malloc"); 504 505 /* 506 * init iorq to iopb pointers, and non-zero fields in the 507 * iopb which never change. 508 */ 509 510 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 511 xyc->xy_chain[lcv] = NULL; 512 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 513 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 514 xyc->iopbase[lcv].asr = 1; /* always the same */ 515 xyc->iopbase[lcv].eef = 1; /* always the same */ 516 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 517 xyc->iopbase[lcv].aud = 1; /* always the same */ 518 xyc->iopbase[lcv].relo = 1; /* always the same */ 519 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 520 521 if ((error = vme_dmamap_create( 522 ct, /* VME chip tag */ 523 MAXPHYS, /* size */ 524 VME_AM_A24, /* address modifier */ 525 VME_D16, /* data size */ 526 0, /* swap */ 527 1, /* nsegments */ 528 MAXPHYS, /* maxsegsz */ 529 0, /* boundary */ 530 BUS_DMA_NOWAIT, 531 &xyc->reqs[lcv].dmamap)) != 0) { 532 533 printf("%s: DMA buffer map create error %d\n", 534 xyc->sc_dev.dv_xname, error); 535 return; 536 } 537 } 538 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 539 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 540 xyc->xy_hand = 0; 541 542 /* read controller parameters and insure we have a 450/451 */ 543 544 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 545 res = xyc->ciopb->ctyp; 546 XYC_DONE(xyc, error); 547 if (res != XYCT_450) { 548 if (error) 549 printf(": %s: ", xyc_e2str(error)); 550 printf(": doesn't identify as a 450/451\n"); 551 return; 552 } 553 printf(": Xylogics 450/451"); 554 if (xyc->no_ols) 555 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 556 printf("\n"); 557 if (error) { 558 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 559 xyc_e2str(error)); 560 return; 561 } 562 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 563 printf("%s: 24 bit addressing turned off\n", 564 xyc->sc_dev.dv_xname); 565 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 566 printf("to enable 24 bit mode and this driver\n"); 567 return; 568 } 569 570 /* link in interrupt with higher level software */ 571 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 572 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 573 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 574 xyc->sc_dev.dv_xname, "intr"); 575 576 callout_init(&xyc->sc_tick_ch); 577 578 /* now we must look for disks using autoconfig */ 579 xa.fullmode = XY_SUB_POLL; 580 xa.booting = 1; 581 582 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 583 (void) config_found(self, (void *) &xa, NULL); 584 585 /* start the watchdog clock */ 586 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 587 588 } 589 590 /* 591 * xymatch: probe for disk. 592 * 593 * note: we almost always say disk is present. this allows us to 594 * spin up and configure a disk after the system is booted (we can 595 * call xyattach!). 596 */ 597 int 598 xymatch(parent, cf, aux) 599 struct device *parent; 600 struct cfdata *cf; 601 void *aux; 602 { 603 struct xyc_attach_args *xa = aux; 604 605 /* looking for autoconf wildcard or exact match */ 606 607 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 608 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 609 return 0; 610 611 return 1; 612 613 } 614 615 /* 616 * xyattach: attach a disk. this can be called from autoconf and also 617 * from xyopen/xystrategy. 618 */ 619 void 620 xyattach(parent, self, aux) 621 struct device *parent, *self; 622 void *aux; 623 624 { 625 struct xy_softc *xy = (void *) self, *oxy; 626 struct xyc_softc *xyc = (void *) parent; 627 struct xyc_attach_args *xa = aux; 628 int spt, mb, blk, lcv, fmode, s = 0, newstate; 629 struct dkbad *dkb; 630 int rseg, error; 631 bus_dma_segment_t seg; 632 bus_addr_t busaddr; 633 caddr_t dmaddr; 634 caddr_t buf; 635 636 /* 637 * Always re-initialize the disk structure. We want statistics 638 * to start with a clean slate. 639 */ 640 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 641 xy->sc_dk.dk_driver = &xydkdriver; 642 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 643 644 /* if booting, init the xy_softc */ 645 646 if (xa->booting) { 647 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 648 xy->flags = 0; 649 xy->parent = xyc; 650 651 /* init queue of waiting bufs */ 652 653 bufq_alloc(&xy->xyq, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 654 655 xy->xyrq = &xyc->reqs[xa->driveno]; 656 657 } 658 xy->xy_drive = xa->driveno; 659 fmode = xa->fullmode; 660 xyc->sc_drives[xa->driveno] = xy; 661 662 /* if not booting, make sure we are the only process in the attach for 663 * this drive. if locked out, sleep on it. */ 664 665 if (!xa->booting) { 666 s = splbio(); 667 while (xy->state == XY_DRIVE_ATTACHING) { 668 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 669 splx(s); 670 return; 671 } 672 } 673 printf("%s at %s", 674 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 675 } 676 677 /* we now have control */ 678 xy->state = XY_DRIVE_ATTACHING; 679 newstate = XY_DRIVE_UNKNOWN; 680 681 buf = NULL; 682 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 683 XYFM_BPS, 684 (caddr_t *)&buf, 685 &busaddr)) != 0) { 686 printf("%s: DMA buffer alloc error %d\n", 687 xyc->sc_dev.dv_xname, error); 688 return; 689 } 690 dmaddr = BUS_ADDR_PADDR(busaddr); 691 692 /* first try and reset the drive */ 693 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 694 XYC_DONE(xyc, error); 695 if (error == XY_ERR_DNRY) { 696 printf(" drive %d: off-line\n", xa->driveno); 697 goto done; 698 } 699 if (error) { 700 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 701 goto done; 702 } 703 printf(" drive %d: ready", xa->driveno); 704 705 /* 706 * now set drive parameters (to semi-bogus values) so we can read the 707 * disk label. 708 */ 709 xy->pcyl = xy->ncyl = 1; 710 xy->acyl = 0; 711 xy->nhead = 1; 712 xy->nsect = 1; 713 xy->sectpercyl = 1; 714 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 715 xy->dkb.bt_bad[lcv].bt_cyl = 716 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 717 718 /* read disk label */ 719 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 720 xy->drive_type++) { 721 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 722 dmaddr, fmode); 723 XYC_DONE(xyc, error); 724 if (error == XY_ERR_AOK) break; 725 } 726 727 if (error != XY_ERR_AOK) { 728 printf("\n%s: reading disk label failed: %s\n", 729 xy->sc_dev.dv_xname, xyc_e2str(error)); 730 goto done; 731 } 732 printf(" (drive type %d)\n", xy->drive_type); 733 734 newstate = XY_DRIVE_NOLABEL; 735 736 xy->hw_spt = spt = 0; /* XXX needed ? */ 737 /* Attach the disk: must be before getdisklabel to malloc label */ 738 disk_attach(&xy->sc_dk); 739 740 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 741 goto done; 742 743 /* inform the user of what is up */ 744 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 745 buf, xy->pcyl); 746 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 747 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 748 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 749 XYFM_BPS); 750 751 /* 752 * 450/451 stupidity: the drive type is encoded into the format 753 * of the disk. the drive type in the IOPB must match the drive 754 * type in the format, or you will not be able to do I/O to the 755 * disk (you get header not found errors). if you have two drives 756 * of different sizes that have the same drive type in their 757 * formatting then you are out of luck. 758 * 759 * this problem was corrected in the 753/7053. 760 */ 761 762 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 763 oxy = xyc->sc_drives[lcv]; 764 if (oxy == NULL || oxy == xy) continue; 765 if (oxy->drive_type != xy->drive_type) continue; 766 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 767 xy->nhead != oxy->nhead) { 768 printf("%s: %s and %s must be the same size!\n", 769 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 770 oxy->sc_dev.dv_xname); 771 panic("xy drive size mismatch"); 772 } 773 } 774 775 776 /* now set the real drive parameters! */ 777 778 blk = (xy->nsect - 1) + 779 ((xy->nhead - 1) * xy->nsect) + 780 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 781 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 782 XYC_DONE(xyc, error); 783 if (error) { 784 printf("%s: write drive size failed: %s\n", 785 xy->sc_dev.dv_xname, xyc_e2str(error)); 786 goto done; 787 } 788 newstate = XY_DRIVE_ONLINE; 789 790 /* 791 * read bad144 table. this table resides on the first sector of the 792 * last track of the disk (i.e. second cyl of "acyl" area). 793 */ 794 795 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 796 /* last cyl */ 797 (xy->nhead - 1) * xy->nsect; /* last head */ 798 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 799 dmaddr, fmode); 800 XYC_DONE(xyc, error); 801 if (error) { 802 printf("%s: reading bad144 failed: %s\n", 803 xy->sc_dev.dv_xname, xyc_e2str(error)); 804 goto done; 805 } 806 807 /* check dkbad for sanity */ 808 dkb = (struct dkbad *) buf; 809 for (lcv = 0; lcv < 126; lcv++) { 810 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 811 dkb->bt_bad[lcv].bt_cyl == 0) && 812 dkb->bt_bad[lcv].bt_trksec == 0xffff) 813 continue; /* blank */ 814 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 815 break; 816 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 817 break; 818 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 819 break; 820 } 821 if (lcv != 126) { 822 printf("%s: warning: invalid bad144 sector!\n", 823 xy->sc_dev.dv_xname); 824 } else { 825 bcopy(buf, &xy->dkb, XYFM_BPS); 826 } 827 828 done: 829 if (buf != NULL) { 830 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 831 &seg, rseg, XYFM_BPS, buf); 832 } 833 834 xy->state = newstate; 835 if (!xa->booting) { 836 wakeup(&xy->state); 837 splx(s); 838 } 839 } 840 841 /* 842 * end of autoconfig functions 843 */ 844 845 /* 846 * { b , c } d e v s w f u n c t i o n s 847 */ 848 849 /* 850 * xyclose: close device 851 */ 852 int 853 xyclose(dev, flag, fmt, p) 854 dev_t dev; 855 int flag, fmt; 856 struct proc *p; 857 858 { 859 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 860 int part = DISKPART(dev); 861 862 /* clear mask bits */ 863 864 switch (fmt) { 865 case S_IFCHR: 866 xy->sc_dk.dk_copenmask &= ~(1 << part); 867 break; 868 case S_IFBLK: 869 xy->sc_dk.dk_bopenmask &= ~(1 << part); 870 break; 871 } 872 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 873 874 return 0; 875 } 876 877 /* 878 * xydump: crash dump system 879 */ 880 int 881 xydump(dev, blkno, va, size) 882 dev_t dev; 883 daddr_t blkno; 884 caddr_t va; 885 size_t size; 886 { 887 int unit, part; 888 struct xy_softc *xy; 889 890 unit = DISKUNIT(dev); 891 if (unit >= xy_cd.cd_ndevs) 892 return ENXIO; 893 part = DISKPART(dev); 894 895 xy = xy_cd.cd_devs[unit]; 896 897 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 898 'a' + part); 899 900 return ENXIO; 901 902 /* outline: globals: "dumplo" == sector number of partition to start 903 * dump at (convert to physical sector with partition table) 904 * "dumpsize" == size of dump in clicks "physmem" == size of physical 905 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 906 * physmem) 907 * 908 * dump a copy of physical memory to the dump device starting at sector 909 * "dumplo" in the swap partition (make sure > 0). map in pages as 910 * we go. use polled I/O. 911 * 912 * XXX how to handle NON_CONTIG? */ 913 914 } 915 916 /* 917 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 918 */ 919 int 920 xyioctl(dev, command, addr, flag, p) 921 dev_t dev; 922 u_long command; 923 caddr_t addr; 924 int flag; 925 struct proc *p; 926 927 { 928 struct xy_softc *xy; 929 struct xd_iocmd *xio; 930 int error, s, unit; 931 #ifdef __HAVE_OLD_DISKLABEL 932 struct disklabel newlabel; 933 #endif 934 struct disklabel *lp; 935 936 unit = DISKUNIT(dev); 937 938 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 939 return (ENXIO); 940 941 /* switch on ioctl type */ 942 943 switch (command) { 944 case DIOCSBAD: /* set bad144 info */ 945 if ((flag & FWRITE) == 0) 946 return EBADF; 947 s = splbio(); 948 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 949 splx(s); 950 return 0; 951 952 case DIOCGDINFO: /* get disk label */ 953 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 954 return 0; 955 #ifdef __HAVE_OLD_DISKLABEL 956 case ODIOCGDINFO: 957 newlabel = *(xy->sc_dk.dk_label); 958 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 959 return ENOTTY; 960 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 961 return 0; 962 #endif 963 964 case DIOCGPART: /* get partition info */ 965 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 966 ((struct partinfo *) addr)->part = 967 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 968 return 0; 969 970 case DIOCSDINFO: /* set disk label */ 971 #ifdef __HAVE_OLD_DISKLABEL 972 case ODIOCSDINFO: 973 if (command == ODIOCSDINFO) { 974 memset(&newlabel, 0, sizeof newlabel); 975 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 976 lp = &newlabel; 977 } else 978 #endif 979 lp = (struct disklabel *)addr; 980 981 if ((flag & FWRITE) == 0) 982 return EBADF; 983 error = setdisklabel(xy->sc_dk.dk_label, 984 lp, /* xy->sc_dk.dk_openmask : */ 0, 985 xy->sc_dk.dk_cpulabel); 986 if (error == 0) { 987 if (xy->state == XY_DRIVE_NOLABEL) 988 xy->state = XY_DRIVE_ONLINE; 989 } 990 return error; 991 992 case DIOCWLABEL: /* change write status of disk label */ 993 if ((flag & FWRITE) == 0) 994 return EBADF; 995 if (*(int *) addr) 996 xy->flags |= XY_WLABEL; 997 else 998 xy->flags &= ~XY_WLABEL; 999 return 0; 1000 1001 case DIOCWDINFO: /* write disk label */ 1002 #ifdef __HAVE_OLD_DISKLABEL 1003 case ODIOCWDINFO: 1004 if (command == ODIOCWDINFO) { 1005 memset(&newlabel, 0, sizeof newlabel); 1006 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1007 lp = &newlabel; 1008 } else 1009 #endif 1010 lp = (struct disklabel *)addr; 1011 1012 if ((flag & FWRITE) == 0) 1013 return EBADF; 1014 error = setdisklabel(xy->sc_dk.dk_label, 1015 lp, /* xy->sc_dk.dk_openmask : */ 0, 1016 xy->sc_dk.dk_cpulabel); 1017 if (error == 0) { 1018 if (xy->state == XY_DRIVE_NOLABEL) 1019 xy->state = XY_DRIVE_ONLINE; 1020 1021 /* Simulate opening partition 0 so write succeeds. */ 1022 xy->sc_dk.dk_openmask |= (1 << 0); 1023 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1024 xystrategy, xy->sc_dk.dk_label, 1025 xy->sc_dk.dk_cpulabel); 1026 xy->sc_dk.dk_openmask = 1027 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1028 } 1029 return error; 1030 1031 case DIOSXDCMD: 1032 xio = (struct xd_iocmd *) addr; 1033 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1034 return (error); 1035 return (xyc_ioctlcmd(xy, dev, xio)); 1036 1037 default: 1038 return ENOTTY; 1039 } 1040 } 1041 1042 /* 1043 * xyopen: open drive 1044 */ 1045 1046 int 1047 xyopen(dev, flag, fmt, p) 1048 dev_t dev; 1049 int flag, fmt; 1050 struct proc *p; 1051 { 1052 int unit, part; 1053 struct xy_softc *xy; 1054 struct xyc_attach_args xa; 1055 1056 /* first, could it be a valid target? */ 1057 1058 unit = DISKUNIT(dev); 1059 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1060 return (ENXIO); 1061 part = DISKPART(dev); 1062 1063 /* do we need to attach the drive? */ 1064 1065 if (xy->state == XY_DRIVE_UNKNOWN) { 1066 xa.driveno = xy->xy_drive; 1067 xa.fullmode = XY_SUB_WAIT; 1068 xa.booting = 0; 1069 xyattach((struct device *) xy->parent, 1070 (struct device *) xy, &xa); 1071 if (xy->state == XY_DRIVE_UNKNOWN) { 1072 return (EIO); 1073 } 1074 } 1075 /* check for partition */ 1076 1077 if (part != RAW_PART && 1078 (part >= xy->sc_dk.dk_label->d_npartitions || 1079 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1080 return (ENXIO); 1081 } 1082 /* set open masks */ 1083 1084 switch (fmt) { 1085 case S_IFCHR: 1086 xy->sc_dk.dk_copenmask |= (1 << part); 1087 break; 1088 case S_IFBLK: 1089 xy->sc_dk.dk_bopenmask |= (1 << part); 1090 break; 1091 } 1092 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1093 1094 return 0; 1095 } 1096 1097 int 1098 xyread(dev, uio, flags) 1099 dev_t dev; 1100 struct uio *uio; 1101 int flags; 1102 { 1103 1104 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1105 } 1106 1107 int 1108 xywrite(dev, uio, flags) 1109 dev_t dev; 1110 struct uio *uio; 1111 int flags; 1112 { 1113 1114 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1115 } 1116 1117 1118 /* 1119 * xysize: return size of a partition for a dump 1120 */ 1121 1122 int 1123 xysize(dev) 1124 dev_t dev; 1125 1126 { 1127 struct xy_softc *xysc; 1128 int unit, part, size, omask; 1129 1130 /* valid unit? */ 1131 unit = DISKUNIT(dev); 1132 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1133 return (-1); 1134 1135 part = DISKPART(dev); 1136 omask = xysc->sc_dk.dk_openmask & (1 << part); 1137 1138 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1139 return (-1); 1140 1141 /* do it */ 1142 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1143 size = -1; /* only give valid size for swap partitions */ 1144 else 1145 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1146 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1147 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1148 return (-1); 1149 return (size); 1150 } 1151 1152 /* 1153 * xystrategy: buffering system interface to xy. 1154 */ 1155 1156 void 1157 xystrategy(bp) 1158 struct buf *bp; 1159 1160 { 1161 struct xy_softc *xy; 1162 int s, unit; 1163 struct xyc_attach_args xa; 1164 struct disklabel *lp; 1165 daddr_t blkno; 1166 1167 unit = DISKUNIT(bp->b_dev); 1168 1169 /* check for live device */ 1170 1171 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1172 bp->b_blkno < 0 || 1173 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1174 bp->b_error = EINVAL; 1175 goto bad; 1176 } 1177 /* do we need to attach the drive? */ 1178 1179 if (xy->state == XY_DRIVE_UNKNOWN) { 1180 xa.driveno = xy->xy_drive; 1181 xa.fullmode = XY_SUB_WAIT; 1182 xa.booting = 0; 1183 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1184 if (xy->state == XY_DRIVE_UNKNOWN) { 1185 bp->b_error = EIO; 1186 goto bad; 1187 } 1188 } 1189 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1190 /* no I/O to unlabeled disks, unless raw partition */ 1191 bp->b_error = EIO; 1192 goto bad; 1193 } 1194 /* short circuit zero length request */ 1195 1196 if (bp->b_bcount == 0) 1197 goto done; 1198 1199 /* check bounds with label (disksubr.c). Determine the size of the 1200 * transfer, and make sure it is within the boundaries of the 1201 * partition. Adjust transfer if needed, and signal errors or early 1202 * completion. */ 1203 1204 lp = xy->sc_dk.dk_label; 1205 1206 if (bounds_check_with_label(&xy->sc_dk, bp, 1207 (xy->flags & XY_WLABEL) != 0) <= 0) 1208 goto done; 1209 1210 /* 1211 * Now convert the block number to absolute and put it in 1212 * terms of the device's logical block size. 1213 */ 1214 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1215 if (DISKPART(bp->b_dev) != RAW_PART) 1216 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1217 1218 bp->b_rawblkno = blkno; 1219 1220 /* 1221 * now we know we have a valid buf structure that we need to do I/O 1222 * on. 1223 */ 1224 s = splbio(); /* protect the queues */ 1225 1226 BUFQ_PUT(&xy->xyq, bp); 1227 1228 /* start 'em up */ 1229 1230 xyc_start(xy->parent, NULL); 1231 1232 /* done! */ 1233 1234 splx(s); 1235 return; 1236 1237 bad: /* tells upper layers we have an error */ 1238 bp->b_flags |= B_ERROR; 1239 done: /* tells upper layers we are done with this 1240 * buf */ 1241 bp->b_resid = bp->b_bcount; 1242 biodone(bp); 1243 } 1244 /* 1245 * end of {b,c}devsw functions 1246 */ 1247 1248 /* 1249 * i n t e r r u p t f u n c t i o n 1250 * 1251 * xycintr: hardware interrupt. 1252 */ 1253 int 1254 xycintr(v) 1255 void *v; 1256 1257 { 1258 struct xyc_softc *xycsc = v; 1259 1260 /* kick the event counter */ 1261 1262 xycsc->sc_intrcnt.ev_count++; 1263 1264 /* remove as many done IOPBs as possible */ 1265 1266 xyc_remove_iorq(xycsc); 1267 1268 /* start any iorq's already waiting */ 1269 1270 xyc_start(xycsc, NULL); 1271 1272 return (1); 1273 } 1274 /* 1275 * end of interrupt function 1276 */ 1277 1278 /* 1279 * i n t e r n a l f u n c t i o n s 1280 */ 1281 1282 /* 1283 * xyc_rqinit: fill out the fields of an I/O request 1284 */ 1285 1286 inline void 1287 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1288 struct xy_iorq *rq; 1289 struct xyc_softc *xyc; 1290 struct xy_softc *xy; 1291 int md; 1292 u_long blk; 1293 int cnt; 1294 caddr_t db; 1295 struct buf *bp; 1296 { 1297 rq->xyc = xyc; 1298 rq->xy = xy; 1299 rq->ttl = XYC_MAXTTL + 10; 1300 rq->mode = md; 1301 rq->tries = rq->errno = rq->lasterror = 0; 1302 rq->blockno = blk; 1303 rq->sectcnt = cnt; 1304 rq->dbuf = db; 1305 rq->buf = bp; 1306 } 1307 1308 /* 1309 * xyc_rqtopb: load up an IOPB based on an iorq 1310 */ 1311 1312 void 1313 xyc_rqtopb(iorq, iopb, cmd, subfun) 1314 struct xy_iorq *iorq; 1315 struct xy_iopb *iopb; 1316 int cmd, subfun; 1317 1318 { 1319 u_long block, dp; 1320 1321 /* normal IOPB case, standard stuff */ 1322 1323 /* chain bit handled later */ 1324 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1325 iopb->com = cmd; 1326 iopb->errno = 0; 1327 iopb->errs = 0; 1328 iopb->done = 0; 1329 if (iorq->xy) { 1330 iopb->unit = iorq->xy->xy_drive; 1331 iopb->dt = iorq->xy->drive_type; 1332 } else { 1333 iopb->unit = 0; 1334 iopb->dt = 0; 1335 } 1336 block = iorq->blockno; 1337 if (iorq->xy == NULL || block == 0) { 1338 iopb->sect = iopb->head = iopb->cyl = 0; 1339 } else { 1340 iopb->sect = block % iorq->xy->nsect; 1341 block = block / iorq->xy->nsect; 1342 iopb->head = block % iorq->xy->nhead; 1343 block = block / iorq->xy->nhead; 1344 iopb->cyl = block; 1345 } 1346 iopb->scnt = iorq->sectcnt; 1347 dp = (u_long) iorq->dbuf; 1348 if (iorq->dbuf == NULL) { 1349 iopb->dataa = 0; 1350 iopb->datar = 0; 1351 } else { 1352 iopb->dataa = (dp & 0xffff); 1353 iopb->datar = ((dp & 0xff0000) >> 16); 1354 } 1355 iopb->subfn = subfun; 1356 } 1357 1358 1359 /* 1360 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1361 */ 1362 1363 int 1364 xyc_unbusy(xyc, del) 1365 1366 struct xyc *xyc; 1367 int del; 1368 1369 { 1370 while (del-- > 0) { 1371 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1372 break; 1373 DELAY(1); 1374 } 1375 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1376 } 1377 1378 /* 1379 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1380 * note that NORM requests are handled separately. 1381 */ 1382 int 1383 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1384 struct xyc_softc *xycsc; 1385 int cmd, subfn, unit, block, scnt; 1386 char *dptr; 1387 int fullmode; 1388 1389 { 1390 int submode = XY_STATE(fullmode); 1391 struct xy_iorq *iorq = xycsc->ciorq; 1392 struct xy_iopb *iopb = xycsc->ciopb; 1393 1394 /* 1395 * is someone else using the control iopq wait for it if we can 1396 */ 1397 start: 1398 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1399 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1400 return(XY_ERR_FAIL); 1401 goto start; 1402 } 1403 1404 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1405 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1406 iorq->mode = XY_SUB_FREE; 1407 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1408 } 1409 1410 /* init iorq/iopb */ 1411 1412 xyc_rqinit(iorq, xycsc, 1413 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1414 fullmode, block, scnt, dptr, NULL); 1415 1416 /* load IOPB from iorq */ 1417 1418 xyc_rqtopb(iorq, iopb, cmd, subfn); 1419 1420 /* submit it for processing */ 1421 1422 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1423 1424 return(XY_ERR_AOK); 1425 } 1426 1427 /* 1428 * xyc_startbuf 1429 * start a buffer for running 1430 */ 1431 1432 int 1433 xyc_startbuf(xycsc, xysc, bp) 1434 struct xyc_softc *xycsc; 1435 struct xy_softc *xysc; 1436 struct buf *bp; 1437 1438 { 1439 int partno, error; 1440 struct xy_iorq *iorq; 1441 struct xy_iopb *iopb; 1442 u_long block; 1443 1444 iorq = xysc->xyrq; 1445 iopb = iorq->iopb; 1446 1447 /* get buf */ 1448 1449 if (bp == NULL) 1450 panic("xyc_startbuf null buf"); 1451 1452 partno = DISKPART(bp->b_dev); 1453 #ifdef XYC_DEBUG 1454 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1455 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1456 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1457 bp->b_bcount, bp->b_data); 1458 #endif 1459 1460 /* 1461 * load request. 1462 * 1463 * note that iorq points to the buffer as mapped into DVMA space, 1464 * where as the bp->b_data points to its non-DVMA mapping. 1465 */ 1466 1467 block = bp->b_rawblkno; 1468 1469 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1470 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1471 if (error != 0) { 1472 printf("%s: warning: cannot load DMA map\n", 1473 xycsc->sc_dev.dv_xname); 1474 return (XY_ERR_FAIL); /* XXX: need some sort of 1475 * call-back scheme here? */ 1476 } 1477 1478 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1479 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1480 ? BUS_DMASYNC_PREREAD 1481 : BUS_DMASYNC_PREWRITE); 1482 1483 /* init iorq and load iopb from it */ 1484 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1485 bp->b_bcount / XYFM_BPS, 1486 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1487 bp); 1488 1489 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1490 1491 /* Instrumentation. */ 1492 disk_busy(&xysc->sc_dk); 1493 1494 return (XY_ERR_AOK); 1495 } 1496 1497 1498 /* 1499 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1500 * if ok. if it fail returns an error code. type is XY_SUB_*. 1501 * 1502 * note: caller frees iorq in all cases except NORM 1503 * 1504 * return value: 1505 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1506 * WAIT: XY_AOK (success), <error-code> (failed) 1507 * POLL: <same as WAIT> 1508 * NOQ : <same as NORM> 1509 * 1510 * there are three sources for i/o requests: 1511 * [1] xystrategy: normal block I/O, using "struct buf" system. 1512 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1513 * [3] open/ioctl: these are I/O requests done in the context of a process, 1514 * and the process should block until they are done. 1515 * 1516 * software state is stored in the iorq structure. each iorq has an 1517 * iopb structure. the hardware understands the iopb structure. 1518 * every command must go through an iopb. a 450 handles one iopb at a 1519 * time, where as a 451 can take them in chains. [the 450 claims it 1520 * can handle chains, but is appears to be buggy...] iopb are allocated 1521 * in DVMA space at boot up time. each disk gets one iopb, and the 1522 * controller gets one (for POLL and WAIT commands). what happens if 1523 * the iopb is busy? for i/o type [1], the buffers are queued at the 1524 * "buff" layer and * picked up later by the interrupt routine. for case 1525 * [2] we can only be blocked if there is a WAIT type I/O request being 1526 * run. since this can only happen when we are crashing, we wait a sec 1527 * and then steal the IOPB. for case [3] the process can sleep 1528 * on the iorq free list until some iopbs are avaliable. 1529 */ 1530 1531 1532 int 1533 xyc_submit_iorq(xycsc, iorq, type) 1534 struct xyc_softc *xycsc; 1535 struct xy_iorq *iorq; 1536 int type; 1537 1538 { 1539 struct xy_iopb *dmaiopb; 1540 1541 #ifdef XYC_DEBUG 1542 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1543 xycsc->sc_dev.dv_xname, iorq, type); 1544 #endif 1545 1546 /* first check and see if controller is busy */ 1547 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1548 #ifdef XYC_DEBUG 1549 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1550 #endif 1551 if (type == XY_SUB_NOQ) 1552 return (XY_ERR_FAIL); /* failed */ 1553 switch (type) { 1554 case XY_SUB_NORM: 1555 return XY_ERR_AOK; /* success */ 1556 case XY_SUB_WAIT: 1557 while (iorq->iopb->done == 0) { 1558 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1559 } 1560 return (iorq->errno); 1561 case XY_SUB_POLL: /* steal controller */ 1562 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1563 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1564 panic("xyc_submit_iorq: stuck xyc"); 1565 printf("%s: stole controller\n", 1566 xycsc->sc_dev.dv_xname); 1567 break; 1568 default: 1569 panic("xyc_submit_iorq adding"); 1570 } 1571 } 1572 1573 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1574 if (dmaiopb == NULL) { /* nothing doing? */ 1575 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1576 return(XY_ERR_AOK); 1577 panic("xyc_submit_iorq: xyc_chain failed!"); 1578 } 1579 1580 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1581 1582 /* command now running, wrap it up */ 1583 switch (type) { 1584 case XY_SUB_NORM: 1585 case XY_SUB_NOQ: 1586 return (XY_ERR_AOK); /* success */ 1587 case XY_SUB_WAIT: 1588 while (iorq->iopb->done == 0) { 1589 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1590 } 1591 return (iorq->errno); 1592 case XY_SUB_POLL: 1593 return (xyc_piodriver(xycsc, iorq)); 1594 default: 1595 panic("xyc_submit_iorq wrap up"); 1596 } 1597 panic("xyc_submit_iorq"); 1598 return 0; /* not reached */ 1599 } 1600 1601 1602 /* 1603 * xyc_chain: build a chain. return dvma address of first element in 1604 * the chain. iorq != NULL: means we only want that item on the chain. 1605 */ 1606 1607 struct xy_iopb * 1608 xyc_chain(xycsc, iorq) 1609 struct xyc_softc *xycsc; 1610 struct xy_iorq *iorq; 1611 1612 { 1613 int togo, chain, hand; 1614 1615 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1616 1617 /* 1618 * promote control IOPB to the top 1619 */ 1620 if (iorq == NULL) { 1621 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1622 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1623 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1624 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1625 } 1626 1627 /* 1628 * special case: if iorq != NULL then we have a POLL or WAIT request. 1629 * we let these take priority and do them first. 1630 */ 1631 if (iorq) { 1632 xycsc->xy_chain[0] = iorq; 1633 iorq->iopb->chen = 0; 1634 return(iorq->dmaiopb); 1635 } 1636 1637 /* 1638 * NORM case: do round robin and maybe chain (if allowed and possible) 1639 */ 1640 chain = 0; 1641 hand = xycsc->xy_hand; 1642 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1643 1644 for (togo = XYC_MAXIOPB; togo > 0; 1645 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1646 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1647 1648 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1649 xycsc->iopbase[hand].done) 1650 continue; /* not ready-for-i/o */ 1651 1652 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1653 iopb = xycsc->xy_chain[chain]->iopb; 1654 iopb->chen = 0; 1655 if (chain != 0) { 1656 /* adding a link to a chain */ 1657 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1658 prev_iopb->chen = 1; 1659 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1660 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1661 } else { 1662 /* head of chain */ 1663 iorq = xycsc->xy_chain[chain]; 1664 } 1665 chain++; 1666 1667 /* quit if chaining dis-allowed */ 1668 if (xycsc->no_ols) 1669 break; 1670 } 1671 1672 return(iorq ? iorq->dmaiopb : NULL); 1673 } 1674 1675 /* 1676 * xyc_piodriver 1677 * 1678 * programmed i/o driver. this function takes over the computer 1679 * and drains off the polled i/o request. it returns the status of the iorq 1680 * the caller is interesting in. 1681 */ 1682 int 1683 xyc_piodriver(xycsc, iorq) 1684 struct xyc_softc *xycsc; 1685 struct xy_iorq *iorq; 1686 1687 { 1688 int nreset = 0; 1689 int retval = 0; 1690 u_long res; 1691 #ifdef XYC_DEBUG 1692 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1693 #endif 1694 1695 while (iorq->iopb->done == 0) { 1696 1697 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1698 1699 /* we expect some progress soon */ 1700 if (res == XY_ERR_FAIL && nreset >= 2) { 1701 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1702 #ifdef XYC_DEBUG 1703 printf("xyc_piodriver: timeout\n"); 1704 #endif 1705 return (XY_ERR_FAIL); 1706 } 1707 if (res == XY_ERR_FAIL) { 1708 if (xyc_reset(xycsc, 0, 1709 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1710 XY_ERR_FAIL, 1711 0) == XY_ERR_FAIL) 1712 return (XY_ERR_FAIL); /* flushes all but POLL 1713 * requests, resets */ 1714 continue; 1715 } 1716 1717 xyc_remove_iorq(xycsc); /* may resubmit request */ 1718 1719 if (iorq->iopb->done == 0) 1720 xyc_start(xycsc, iorq); 1721 } 1722 1723 /* get return value */ 1724 1725 retval = iorq->errno; 1726 1727 #ifdef XYC_DEBUG 1728 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1729 iorq->errno, xyc_e2str(iorq->errno)); 1730 #endif 1731 1732 /* start up any bufs that have queued */ 1733 1734 xyc_start(xycsc, NULL); 1735 1736 return (retval); 1737 } 1738 1739 /* 1740 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1741 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1742 */ 1743 void 1744 xyc_xyreset(xycsc, xysc) 1745 struct xyc_softc *xycsc; 1746 struct xy_softc *xysc; 1747 1748 { 1749 struct xy_iopb tmpiopb; 1750 struct xy_iopb *iopb; 1751 int del; 1752 1753 iopb = xycsc->ciopb; 1754 1755 /* Save contents */ 1756 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1757 1758 iopb->chen = iopb->done = iopb->errs = 0; 1759 iopb->ien = 0; 1760 iopb->com = XYCMD_RST; 1761 iopb->unit = xysc->xy_drive; 1762 1763 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1764 1765 del = XYC_RESETUSEC; 1766 while (del > 0) { 1767 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1768 break; 1769 DELAY(1); 1770 del--; 1771 } 1772 1773 if (del <= 0 || iopb->errs) { 1774 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1775 xyc_e2str(iopb->errno)); 1776 del = xycsc->xyc->xyc_rsetup; 1777 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1778 panic("xyc_reset"); 1779 } else { 1780 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1781 } 1782 1783 /* Restore contents */ 1784 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1785 } 1786 1787 1788 /* 1789 * xyc_reset: reset everything: requests are marked as errors except 1790 * a polled request (which is resubmitted) 1791 */ 1792 int 1793 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1794 struct xyc_softc *xycsc; 1795 int quiet, error; 1796 struct xy_iorq *blastmode; 1797 struct xy_softc *xysc; 1798 1799 { 1800 int del = 0, lcv, retval = XY_ERR_AOK; 1801 1802 /* soft reset hardware */ 1803 1804 if (!quiet) 1805 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1806 del = xycsc->xyc->xyc_rsetup; 1807 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1808 if (del == XY_ERR_FAIL) { 1809 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1810 retval = XY_ERR_FAIL; 1811 } 1812 if (xysc) 1813 xyc_xyreset(xycsc, xysc); 1814 1815 /* fix queues based on "blast-mode" */ 1816 1817 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1818 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1819 1820 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1821 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1822 XY_STATE(iorq->mode) != XY_SUB_NORM) 1823 /* is it active? */ 1824 continue; 1825 1826 if (blastmode == XY_RSET_ALL || 1827 blastmode != iorq) { 1828 /* failed */ 1829 iorq->errno = error; 1830 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1831 switch (XY_STATE(iorq->mode)) { 1832 case XY_SUB_NORM: 1833 iorq->buf->b_error = EIO; 1834 iorq->buf->b_flags |= B_ERROR; 1835 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1836 1837 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1838 iorq->dmamap->dm_mapsize, 1839 (iorq->buf->b_flags & B_READ) 1840 ? BUS_DMASYNC_POSTREAD 1841 : BUS_DMASYNC_POSTWRITE); 1842 1843 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1844 1845 (void)BUFQ_GET(&iorq->xy->xyq); 1846 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1847 (xycsc->reqs[lcv].buf->b_bcount - 1848 xycsc->reqs[lcv].buf->b_resid), 1849 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1850 biodone(iorq->buf); 1851 iorq->mode = XY_SUB_FREE; 1852 break; 1853 case XY_SUB_WAIT: 1854 wakeup(iorq); 1855 case XY_SUB_POLL: 1856 iorq->mode = 1857 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1858 break; 1859 } 1860 1861 } else { 1862 1863 /* resubmit, no need to do anything here */ 1864 } 1865 } 1866 1867 /* 1868 * now, if stuff is waiting, start it. 1869 * since we just reset it should go 1870 */ 1871 xyc_start(xycsc, NULL); 1872 1873 return (retval); 1874 } 1875 1876 /* 1877 * xyc_start: start waiting buffers 1878 */ 1879 1880 void 1881 xyc_start(xycsc, iorq) 1882 struct xyc_softc *xycsc; 1883 struct xy_iorq *iorq; 1884 1885 { 1886 int lcv; 1887 struct xy_softc *xy; 1888 1889 if (iorq == NULL) { 1890 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1891 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1892 if (BUFQ_PEEK(&xy->xyq) == NULL) continue; 1893 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1894 xyc_startbuf(xycsc, xy, BUFQ_PEEK(&xy->xyq)); 1895 } 1896 } 1897 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1898 } 1899 1900 /* 1901 * xyc_remove_iorq: remove "done" IOPB's. 1902 */ 1903 1904 int 1905 xyc_remove_iorq(xycsc) 1906 struct xyc_softc *xycsc; 1907 1908 { 1909 int errno, rq, comm, errs; 1910 struct xyc *xyc = xycsc->xyc; 1911 u_long addr; 1912 struct xy_iopb *iopb; 1913 struct xy_iorq *iorq; 1914 struct buf *bp; 1915 1916 if (xyc->xyc_csr & XYC_DERR) { 1917 /* 1918 * DOUBLE ERROR: should never happen under normal use. This 1919 * error is so bad, you can't even tell which IOPB is bad, so 1920 * we dump them all. 1921 */ 1922 errno = XY_ERR_DERR; 1923 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1924 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1925 printf("%s: soft reset failed!\n", 1926 xycsc->sc_dev.dv_xname); 1927 panic("xyc_remove_iorq: controller DEAD"); 1928 } 1929 return (XY_ERR_AOK); 1930 } 1931 1932 /* 1933 * get iopb that is done, loop down the chain 1934 */ 1935 1936 if (xyc->xyc_csr & XYC_ERR) { 1937 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1938 } 1939 if (xyc->xyc_csr & XYC_IPND) { 1940 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1941 } 1942 1943 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1944 iorq = xycsc->xy_chain[rq]; 1945 if (iorq == NULL) break; /* done ! */ 1946 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1947 continue; /* free, or done */ 1948 iopb = iorq->iopb; 1949 if (iopb->done == 0) 1950 continue; /* not done yet */ 1951 1952 comm = iopb->com; 1953 errs = iopb->errs; 1954 1955 if (errs) 1956 iorq->errno = iopb->errno; 1957 else 1958 iorq->errno = 0; 1959 1960 /* handle non-fatal errors */ 1961 1962 if (errs && 1963 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1964 continue; /* AOK: we resubmitted it */ 1965 1966 1967 /* this iorq is now done (hasn't been restarted or anything) */ 1968 1969 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1970 xyc_perror(iorq, iopb, 0); 1971 1972 /* now, if read/write check to make sure we got all the data 1973 * we needed. (this may not be the case if we got an error in 1974 * the middle of a multisector request). */ 1975 1976 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1977 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1978 /* we just successfully processed a bad144 sector 1979 * note: if we are in bad 144 mode, the pointers have 1980 * been advanced already (see above) and are pointing 1981 * at the bad144 sector. to exit bad144 mode, we 1982 * must advance the pointers 1 sector and issue a new 1983 * request if there are still sectors left to process 1984 * 1985 */ 1986 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1987 1988 /* exit b144 mode */ 1989 iorq->mode = iorq->mode & (~XY_MODE_B144); 1990 1991 if (iorq->sectcnt) { /* more to go! */ 1992 iorq->lasterror = iorq->errno = iopb->errno = 0; 1993 iopb->errs = iopb->done = 0; 1994 iorq->tries = 0; 1995 iopb->scnt = iorq->sectcnt; 1996 iopb->cyl = iorq->blockno / 1997 iorq->xy->sectpercyl; 1998 iopb->head = 1999 (iorq->blockno / iorq->xy->nhead) % 2000 iorq->xy->nhead; 2001 iopb->sect = iorq->blockno % XYFM_BPS; 2002 addr = (u_long) iorq->dbuf; 2003 iopb->dataa = (addr & 0xffff); 2004 iopb->datar = ((addr & 0xff0000) >> 16); 2005 /* will resubit at end */ 2006 continue; 2007 } 2008 } 2009 /* final cleanup, totally done with this request */ 2010 2011 switch (XY_STATE(iorq->mode)) { 2012 case XY_SUB_NORM: 2013 bp = iorq->buf; 2014 if (errs) { 2015 bp->b_error = EIO; 2016 bp->b_flags |= B_ERROR; 2017 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2018 } else { 2019 bp->b_resid = 0; /* done */ 2020 } 2021 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2022 iorq->dmamap->dm_mapsize, 2023 (iorq->buf->b_flags & B_READ) 2024 ? BUS_DMASYNC_POSTREAD 2025 : BUS_DMASYNC_POSTWRITE); 2026 2027 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2028 2029 (void)BUFQ_GET(&iorq->xy->xyq); 2030 disk_unbusy(&iorq->xy->sc_dk, 2031 (bp->b_bcount - bp->b_resid), 2032 (bp->b_flags & B_READ)); 2033 iorq->mode = XY_SUB_FREE; 2034 biodone(bp); 2035 break; 2036 case XY_SUB_WAIT: 2037 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2038 wakeup(iorq); 2039 break; 2040 case XY_SUB_POLL: 2041 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2042 break; 2043 } 2044 } 2045 2046 return (XY_ERR_AOK); 2047 } 2048 2049 /* 2050 * xyc_perror: print error. 2051 * - if still_trying is true: we got an error, retried and got a 2052 * different error. in that case lasterror is the old error, 2053 * and errno is the new one. 2054 * - if still_trying is not true, then if we ever had an error it 2055 * is in lasterror. also, if iorq->errno == 0, then we recovered 2056 * from that error (otherwise iorq->errno == iorq->lasterror). 2057 */ 2058 void 2059 xyc_perror(iorq, iopb, still_trying) 2060 struct xy_iorq *iorq; 2061 struct xy_iopb *iopb; 2062 int still_trying; 2063 2064 { 2065 2066 int error = iorq->lasterror; 2067 2068 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2069 : iorq->xyc->sc_dev.dv_xname); 2070 if (iorq->buf) 2071 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2072 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2073 printf("%s %d/%d/%d: ", 2074 (iopb->com == XYCMD_RD) ? "read" : "write", 2075 iopb->cyl, iopb->head, iopb->sect); 2076 printf("%s", xyc_e2str(error)); 2077 2078 if (still_trying) 2079 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2080 else 2081 if (iorq->errno == 0) 2082 printf(" [recovered in %d tries]", iorq->tries); 2083 2084 printf("\n"); 2085 } 2086 2087 /* 2088 * xyc_error: non-fatal error encountered... recover. 2089 * return AOK if resubmitted, return FAIL if this iopb is done 2090 */ 2091 int 2092 xyc_error(xycsc, iorq, iopb, comm) 2093 struct xyc_softc *xycsc; 2094 struct xy_iorq *iorq; 2095 struct xy_iopb *iopb; 2096 int comm; 2097 2098 { 2099 int errno = iorq->errno; 2100 int erract = xyc_entoact(errno); 2101 int oldmode, advance; 2102 #ifdef __sparc__ 2103 int i; 2104 #endif 2105 2106 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2107 oldmode = iorq->mode; 2108 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2109 /* make xyc_start ignore us */ 2110 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2111 iorq->mode = oldmode; 2112 } 2113 /* check for read/write to a sector in bad144 table if bad: redirect 2114 * request to bad144 area */ 2115 2116 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2117 (iorq->mode & XY_MODE_B144) == 0) { 2118 advance = iorq->sectcnt - iopb->scnt; 2119 XYC_ADVANCE(iorq, advance); 2120 #ifdef __sparc__ 2121 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2122 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2123 iorq->blockno % iorq->xy->nsect)) != -1) { 2124 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2125 * redirect */ 2126 iopb->errno = iopb->done = iopb->errs = 0; 2127 iopb->scnt = 1; 2128 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2129 /* second to last acyl */ 2130 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2131 * standard */ 2132 iopb->head = i / iorq->xy->nhead; 2133 iopb->sect = i % iorq->xy->nhead; 2134 /* will resubmit when we come out of remove_iorq */ 2135 return (XY_ERR_AOK); /* recovered! */ 2136 } 2137 #endif 2138 } 2139 2140 /* 2141 * it isn't a bad144 sector, must be real error! see if we can retry 2142 * it? 2143 */ 2144 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2145 xyc_perror(iorq, iopb, 1); /* inform of error state 2146 * change */ 2147 iorq->lasterror = errno; 2148 2149 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2150 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2151 iorq->tries++; 2152 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2153 /* will resubmit at end of remove_iorq */ 2154 return (XY_ERR_AOK); /* recovered! */ 2155 } 2156 2157 /* failed to recover from this error */ 2158 return (XY_ERR_FAIL); 2159 } 2160 2161 /* 2162 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2163 */ 2164 void 2165 xyc_tick(arg) 2166 void *arg; 2167 2168 { 2169 struct xyc_softc *xycsc = arg; 2170 int lcv, s, reset = 0; 2171 2172 /* reduce ttl for each request if one goes to zero, reset xyc */ 2173 s = splbio(); 2174 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2175 if (xycsc->reqs[lcv].mode == 0 || 2176 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2177 continue; 2178 xycsc->reqs[lcv].ttl--; 2179 if (xycsc->reqs[lcv].ttl == 0) 2180 reset = 1; 2181 } 2182 if (reset) { 2183 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2184 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2185 } 2186 splx(s); 2187 2188 /* until next time */ 2189 2190 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2191 } 2192 2193 /* 2194 * xyc_ioctlcmd: this function provides a user level interface to the 2195 * controller via ioctl. this allows "format" programs to be written 2196 * in user code, and is also useful for some debugging. we return 2197 * an error code. called at user priority. 2198 * 2199 * XXX missing a few commands (see the 7053 driver for ideas) 2200 */ 2201 int 2202 xyc_ioctlcmd(xy, dev, xio) 2203 struct xy_softc *xy; 2204 dev_t dev; 2205 struct xd_iocmd *xio; 2206 2207 { 2208 int s, rqno, dummy = 0; 2209 caddr_t dvmabuf = NULL, buf = NULL; 2210 struct xyc_softc *xycsc; 2211 int rseg, error; 2212 bus_dma_segment_t seg; 2213 2214 /* check sanity of requested command */ 2215 2216 switch (xio->cmd) { 2217 2218 case XYCMD_NOP: /* no op: everything should be zero */ 2219 if (xio->subfn || xio->dptr || xio->dlen || 2220 xio->block || xio->sectcnt) 2221 return (EINVAL); 2222 break; 2223 2224 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2225 case XYCMD_WR: 2226 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2227 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2228 return (EINVAL); 2229 break; 2230 2231 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2232 return (EINVAL); 2233 2234 break; 2235 2236 default: 2237 return (EINVAL);/* ??? */ 2238 } 2239 2240 xycsc = xy->parent; 2241 2242 /* create DVMA buffer for request if needed */ 2243 if (xio->dlen) { 2244 bus_addr_t busbuf; 2245 2246 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2247 &seg, &rseg, 2248 xio->dlen, &buf, 2249 &busbuf)) != 0) { 2250 return (error); 2251 } 2252 dvmabuf = BUS_ADDR_PADDR(busbuf); 2253 2254 if (xio->cmd == XYCMD_WR) { 2255 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2256 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2257 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2258 return (error); 2259 } 2260 } 2261 } 2262 /* do it! */ 2263 2264 error = 0; 2265 s = splbio(); 2266 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2267 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2268 if (rqno == XY_ERR_FAIL) { 2269 error = EIO; 2270 goto done; 2271 } 2272 xio->errno = xycsc->ciorq->errno; 2273 xio->tries = xycsc->ciorq->tries; 2274 XYC_DONE(xycsc, dummy); 2275 2276 if (xio->cmd == XYCMD_RD) 2277 error = copyout(buf, xio->dptr, xio->dlen); 2278 2279 done: 2280 splx(s); 2281 if (dvmabuf) { 2282 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2283 xio->dlen, buf); 2284 } 2285 return (error); 2286 } 2287 2288 /* 2289 * xyc_e2str: convert error code number into an error string 2290 */ 2291 char * 2292 xyc_e2str(no) 2293 int no; 2294 { 2295 switch (no) { 2296 case XY_ERR_FAIL: 2297 return ("Software fatal error"); 2298 case XY_ERR_DERR: 2299 return ("DOUBLE ERROR"); 2300 case XY_ERR_AOK: 2301 return ("Successful completion"); 2302 case XY_ERR_IPEN: 2303 return("Interrupt pending"); 2304 case XY_ERR_BCFL: 2305 return("Busy conflict"); 2306 case XY_ERR_TIMO: 2307 return("Operation timeout"); 2308 case XY_ERR_NHDR: 2309 return("Header not found"); 2310 case XY_ERR_HARD: 2311 return("Hard ECC error"); 2312 case XY_ERR_ICYL: 2313 return("Illegal cylinder address"); 2314 case XY_ERR_ISEC: 2315 return("Illegal sector address"); 2316 case XY_ERR_SMAL: 2317 return("Last sector too small"); 2318 case XY_ERR_SACK: 2319 return("Slave ACK error (non-existent memory)"); 2320 case XY_ERR_CHER: 2321 return("Cylinder and head/header error"); 2322 case XY_ERR_SRTR: 2323 return("Auto-seek retry successful"); 2324 case XY_ERR_WPRO: 2325 return("Write-protect error"); 2326 case XY_ERR_UIMP: 2327 return("Unimplemented command"); 2328 case XY_ERR_DNRY: 2329 return("Drive not ready"); 2330 case XY_ERR_SZER: 2331 return("Sector count zero"); 2332 case XY_ERR_DFLT: 2333 return("Drive faulted"); 2334 case XY_ERR_ISSZ: 2335 return("Illegal sector size"); 2336 case XY_ERR_SLTA: 2337 return("Self test A"); 2338 case XY_ERR_SLTB: 2339 return("Self test B"); 2340 case XY_ERR_SLTC: 2341 return("Self test C"); 2342 case XY_ERR_SOFT: 2343 return("Soft ECC error"); 2344 case XY_ERR_SFOK: 2345 return("Soft ECC error recovered"); 2346 case XY_ERR_IHED: 2347 return("Illegal head"); 2348 case XY_ERR_DSEQ: 2349 return("Disk sequencer error"); 2350 case XY_ERR_SEEK: 2351 return("Seek error"); 2352 default: 2353 return ("Unknown error"); 2354 } 2355 } 2356 2357 int 2358 xyc_entoact(errno) 2359 2360 int errno; 2361 2362 { 2363 switch (errno) { 2364 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2365 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2366 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2367 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2368 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2369 2370 return(XY_ERA_PROG); /* program error ! */ 2371 2372 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2373 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2374 case XY_ERR_SOFT: 2375 2376 return(XY_ERA_HARD); /* hard error, retry */ 2377 2378 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2379 2380 return(XY_ERA_RSET); /* hard error reset */ 2381 2382 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2383 2384 return(XY_ERA_SOFT); /* an FYI error */ 2385 2386 case XY_ERR_WPRO: 2387 2388 return(XY_ERA_WPRO); /* write protect */ 2389 } 2390 2391 return(XY_ERA_PROG); /* ??? */ 2392 } 2393
Indexes created Tue Sep 30 20:09:53 GMT 2025